1345490923 has 16 divisors (see below), whose sum is σ = 1589022720. Its totient is φ = 1114869600.

The previous prime is 1345490899. The next prime is 1345490933. The reversal of 1345490923 is 3290945431.

It is a cyclic number.

It is not a de Polignac number, because 1345490923 - 2⁹ = 1345490411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345490933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237858 + ... + 243448.

It is an arithmetic number, because the mean of its divisors is an integer number (99313920).

Almost surely, 2^1345490923 is an apocalyptic number.

1345490923 is a deficient number, since it is larger than the sum of its proper divisors (243531797).

1345490923 is a wasteful number, since it uses less digits than its factorization.

1345490923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6738.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 1345490923 is about 36680.9340529927. The cubic root of 1345490923 is about 1103.9775895450.

The spelling of 1345490923 in words is "one billion, three hundred forty-five million, four hundred ninety thousand, nine hundred twenty-three".